Unable to deploy kubernetes using heat. Exits without output.

recently i am trying to deploy kubernetes to my newly created openstack-setup using this guide (https://kubernetes.io/docs/getting-started-guides/openstack-heat/ (https://kubernetes.io/docs/getting-st...)).
But right at the point

[INFO] Create stack KubernetesStack

it quits without errors. I managed to get some output adding the "--debug"-option in the script but do not know what to do with it.
Any ideas?